wodim allows you to create CDs or DVDs on a CD/DVD recorder. It supports writing data, audio, mixed, multi-session, and CD+ disc and DVD data and video disks on DVD capable devices, on just about every type of CD/DVD recorder out there.

TCC (for Tiny C Compiler) is a small and fast ANSI C compiler. It generates optimized x86 code, and can compile, assemble, and link several times faster than 'gcc -O0'. Any C dynamic library can be used directly. It includes an optional memory and bounds checker, and bounds-checked code can be mixed freely with standard code. C script is also supported via the usual hash-bang mechanism.

bootchart2 is a boot process performance analyser: a tool that lets you collect and analyse data from your boot process.

Gpsim is a full-featured software simulator for Microchip PIC microcontrollers.

Adun is a biomolecular simulator that also includes data management and analysis capabilities. It was developed at the Computational Biophysics and Biochemistry Laboratory, a part of the Research Unit on Biomedical Informatics of the UPF.